Ventilator.



No. 757,534, PATENTED APR.'19, 1904.

a A. WITHERS. r

VENTILATOB...

. APPLICATION FILED MAY 22; 1903.

Patented. April 19, 1904.

UNITED [STATES PATENT OFFICE.

CHARLES A. WITHERS, OF AUGUSTA, GEORGIA, ASSIGNOR TO INTER- NATIONAL VENTILATOR AND DEFLECTOR COMPANICOF WASHING- TON, DISTRICT'OF COLUMBIA, A CORPORATION .OF THE DISTRICT OF COLUMBIA.

VENTILATOQR.

SPECIFICATION forming part of Letters Patent No. 757,534,'dated April 19, 1904;

Application filed May 22, 1903. Serial No. 158,364. (1% model.) i

particularly adapted for use in connection with any inclosed space where it is desirable to withdraw foul or vitlated a1rfor example, living-rooms, railway-cars, railway refrlgerator-cars, ships, or habitable or other build ingswherever it is applicable.

The object of the invention is toprovide new, and novel means, as hereinafter more specifically set forth, and illustrated in the ac companying drawings, which is adapted when in use for creating an induced upward current of air in the conduit or conduits leading from the structure in which the device is used, thereby withdrawing the foul, vitiated, or. heated air therefrom. 7

The invention further aims to construct a ventilator which shall be extremely simple in its construction, strong, durable, eificient in its use, and comparatively inexpensive to set up.

With the foregoing and other objects in view the invention consists of the novel combination and arrangement of parts, hereinafter more specifically described, illustrated in the accompanying drawings, and particularly pointed out in the claims hereunto appended.

In describing the invention in detail refer: ence is had to the accompanying drawings, forming a part of this specification, wherein likereference characters denote corresponding parts throughout the several views, and in which l Figure 1 is a vertical sectional view of my improved ventilator. Fig. an an elevation looking into the hood, and Fig. 3 is a sectional plan.

Referring to the drawings by reference characters, 1 denotes the body portion'of-the ventilator, and which is preferably cylindrical in contour, although any preferred shape may be employed. The body portion 1 is adapted to communicate with the conduit leading to the inclosed space which is to be ventilated. The top of the body portion 1 exteriorly thereof has suitably secured thereto a ring 2, having an annular groove 3, which forms a ballrace and within which is mounted the bearing-balls {1. ,The upper edge of the body portion 1 is constructed with an outwardly-extending annular flange 5, which is a suitable distance above the ring 2 and is adapted to connect to the body portion 1 the hood 6, the bottomof the hood when the latter is in position resting upon the bearing-balls 4c and the hood so mounted upon the body portion 1 as to permit of the rotation thereof,'or, in other words, to enable the hood 6 to be moved so that the rear of the hood will point in the direction from which the wind blows. The hood 6 is formed with a bottom 7,having a circular opening to permit of the mounting of the hood upon the body portion 1 and to permit of the body portion 1 communicating with the hood. The flange 5 of the body portion 1, when the hood is connected to the body portion, is adapted to extend above the inner face of the bottom 7 of the hood 6. The bottom 7 of the ameter of the body portion 1, and the width of the bottom 7 is slightly greater in width than.

the diameter of the body portion 1. The hood 6 is also constructed with a cap 8. This cap forms the sides and' top walls of the hood. The cap 8 converges downwardly from its rear to its forward end, 'and its rear end in connection with the bottom 7 forms the mouth of the hood. Thecap 8 is not as long as the bottom 6, so that thejlatter projects slightly from the rear end of the cap. The contour of the rear end of the cap' is what may be termed arch-shaped, and, as before stated, the'cap tapers downwardly from its rear end to its forward end. The bottom of the hood at its rear end is wider than the remaining portion thereof, so that the bottom 7 will project laterally from the sides of the cap. The cap 8 has connected thereto centrally of its outer face a vertically-extending wing 9. The hood 6 is counterbalanced, as at 9.

Connected at its lower ends with the lateral extensions of the bottom 7 andextending around the cap 8 is an obliquely-extending band 10, arranged a suitable distance from the cap 8 and projecting at one end over the mouth of the hood. The band 10 is also retained in position by means of the vane 9, which is secured to the band 10 centrally thereof, as shown.

The band 10, in connection with the cap 8, is adapted to form an air-passage the walls of which are inclined and the said passage terminating at its rear in a contracted discharge end. The band 10 extends, as before stated, in an oblique or inclined manner, and at what may be termed its rear end projects over the mouth of the hood a suitable distance.

The operation is as follows: The wind strikes against a vane 9 and turns the hood in such a manner as to have the rear of the hood pointing in the direction from which the wind blows, the wind passing into the air-passage and is compressed in the same, whereby its power and speed will be increased, and it produces a powerful suction at the mouth of the hood, whereby an induced upward current of air is created in the body portion 1, which communicates with the conduit or conduits leading from the inclosed space which is to be ventilated, thereby withdrawing the foul, vitiated, or heated air therefrom.

When the ventilator is used in connection with an inclosed refrigerating spacesuch,for example,as a refrigeratingcarthe body portion 1 is provided with a gravity return-valve 11, which is carried by the pivotal rod 12 extending through the body portion 1 and projects also therefrom. The projecting ends of the rod 12 carry the wings 13, so that the wind acting upon the wings will move them from vertical to horizontal position, and thereby open the'valve 11. The wings 13 are concentrically connected to the rod 12, so that the portion depending below the said rod will be of greater length than that portion of the wings 13 extending above the rod 12. Therefore the wings 13 may be termed counterbalanced wings, for the reason that when the car stops the wings resume their normal position by gravity, thereby closing the valve 11 and preventing the entrance of hot air to the car. When the car starts again, it will be evident that a valve 11 will be open and that the refrigerating-space will be ventilated by the rotatable hood 6 in a manner as hereinbefore set forth. It will be evident in view of the foregoing that the valve 11 will not be employed in the body portion 1 unless the ventilator is used for the purpose just setforth.

It is thought the many advantages of my improved ventilator can be readily understood from the foregoing description, taken in connection with the accompanying drawings, and it will furthermore be evident that changes, variations, and modifications can be resorted to without departing from the spirit of the invention or sacrificing any of its advantages, and I therefore do not wish to restrict myself to the details of construction hereinbefore described, and as shown in the accompanying drawings, but reserve the right to make such changes, variations, and modifications as come properly within the scope of the protection prayed.

Having thus fully described my invention,

what I claim as new, and desire to secure by- Letters Patent, is;-

1. A ventilator comprising a body portion, a hood rotatably mounted thereon and comprising a flat bottom and a converged cap connected thereto, said cap having its rear end of greater height than its forward end and forming in connection with said flat bottom at the rear thereof a mouth for the hood, said flat bottom provided with an opening for establishing communication between the hood and the body portion, and said flat bottom at its rear end projecting from each side of the cap, and a band connected to the projecting portions of the bottom and extending around said cap,said band projecting over the rear end of said cap and extending in an inclined manner with respect to said cap and forming in connection with the cap an inclined air-passage having its rear or discharge end contracted.

2. A ventilator comprising a body portion, a hood rotatably mounted thereonand comprising a flat bottom and aconverged cap connected thereto, said cap having its rear end of greater height than its forward end and forming in connection with said flat bottom at the rear thereof a mouth for the hood, said fiat bottom provided with an opening for establishing communication between the hood and the body portion, and said flat bottom at-its rear end projectingfrom each side of the cap, a band connected to the projecting portions of the bottom and extending around said cap, said band projecting over the rear end of said cap and extending in an inclined manner with respect to said cap and forming in connection with the cap an inclined air-passage havingits rear or discharge end contracted, a weight arranged in the forward end of said hood, and a vane mounted upon said hood and provided with a slit adaptedto receive the said band for retaining the upper portion of said band in position.

3. A Ventilator comprising a body portion, a hood rotatably mounted thereon and comprising a flat bottom and a converged cap connected thereto, said cap having its rear end of greater height than its-forward end and forming in connection with said flat bottom at the said cap and extending in an inclined manner with respect to said cap and forming in connection with the cap an inclined air-passage having its rear or discharge end contracted, and a valve mechanism connected with the said body portion and adapted to be moved to an open position by the pressure of the wind and to return to its closing position by gravity when pressure is removed therefrom.

4. A ventilator comprising a body portion, a hood rotatably mounted thereon and comprising a fiat bottom and a converged cap connected thereto, said cap having its rear end of greater height than its forward end and forming in connection with said flat bottom at the rear thereof a mouth for the hood, said flat bottom provided with an opening for establishing communication between the hood and the body portion, and said flat bottom at its rear end projecting from each side of the cap, a band connected to theprojecting portions of the bottom and extending around said cap, said band projecting over the rear end of said cap and forming in connection with the cap an inclined air-passage having its rear or discharge end contracted, a weight arranged in the forward end of said hood, avane mounted upon said hood and provided with aslit adapted to receive the said band for retaining the upper portion of said band in position, and a valve mechanism connected with the said body portion and adapted to be moved to an open position by the pressure of the wind and to return to its closing position by gravity when pressure is removed therefrom.

5. A ventilator comprising a body portion provided at its top with a grooved ring forming a ball-race and further provided with an annular flange a suitable distance above said ring, balls mounted in said race, a hood comprising a flat bottom and a cap, said flat bottom provided with an opening for establishing communication between the hood and bottom prtion, said flat bottom mounted upon the balls in said race and retained in said position by means of said flange, said cap constructed in a converging manner so that its rear end will be of greater height than its forward end and forming in connection with the flat bottom at the rear end thereof amouth for the hood, said bottom at its rear end projecting from each side of the hood, and a band connected to the projecting portions of the bottom and extending around said cap, said band projecting over the rear end of said cap and extending in an inclined manner, with respect to said cap and forming in connection with the cap an inclined air-passage having its rear or discharge end contracted.

6. A ventilator comprising a body portion provided at its top with a grooved ring forming a ball-race and further provided with an annular flange a suitable distance above said ring, balls mounted in said race, a hood comprising a flat bottom and a cap, said flat bottom provided with an opening for establishing communication between the hood and bottom portion, said flat bottom mounted upon the balls in said race and retained in said position by means of said flange, said cap constructed in a converging manner so that its rear end will beof greater height than its forward end and forming in connection with the flat bottom at the rear end thereof a mouth for the hood, said bottom at its rear end projecting from each side of the hood, a band connected to the projecting portions of the bottom and extending aroundfsaid cap, said band projecting over the rear end of said cap and extending in an inclined manner with respect to said cap and forming in connection with the cap an inclined air-passage having its rear or discharge end contracted, a weight arranged in the for ward end of said hood, and a vane mounted upon said hood and provided with a slit adapted to receive the said band for retaining the upper portion of said band in position.

7. A ventilator comprising a body portion provided at its top with a grooved ring forming a ball-race and further provided with an annular flange a-suitable distance above said ring, balls mounted in said race, a hood comprising a flat bottom and a cap, said flat bottom provided with an opening for establishing com- 'munication between the hood and bottom portion, said flat bottom mounted upon the balls in said race and retained in saidposition by means of said flange, said cap constructed in a converging manner so that its rear end will beof greater height than its forward end and forming in connection with the fiat bottom at the rear end thereof a mouth for the hood, said bottom at its rear end projecting from each side of the hood, a band connected to the projecting portions of the bottom and extending around said cap, said band projecting over the rear end of said cap and extending in an inclined manner with respect to said cap and forming in connection with the cap an inclined air-passage having its rear or discharge end contracted, and a valve mechanism connected with the said body portion and adapted to be moved to an open position by the pressure of the wind and to return to its closing position by gravity when pressure is removed therefrom.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

CHARLES A. WITHERS.

Witnesses:

N. LOUIS BOGAN, GEO. W. REA. 

